In 333 BC, Su Qin said to King Xuanhui of Han: "In the radius of South Korea is more than 900 miles, hundreds of thousands of soldiers. The world's strong bows, powerful crossbows and sharp swords are all produced in Korea. The crossbow arrows are more than 100 consecutive shots.

In 333 BC, Su Qin said to Han Xuanhui King : "South Korea is more than 900 miles in radius, hundreds of thousands of soldiers, and the world's strong bows, powerful crossbows and sharp swords are all produced in Korea. The crossbow arrows are more than 100 consecutive shots, the soldiers are brave and the armor is strong. Board and crossbow is strong and the sword is sharp. One person can stand up to hundreds of people. If the king surrenders to Qin , the king will ask South Korea for the two cities of Yiyang and Chenggao. Now he will satisfy him. Next year, there will be other places. The king's land is limited and the Qin State is endless. He will cater to infinite greed with limited land and ask for trouble. As the saying goes, 'It is better to be the mouth of a chicken, but not the queen of a cow.' You are so wise, you have strong soldiers and have a reputation. I am shy for you behind your back!" Han King listens to the advice.

Su Qin said to King of Wei : "You are a thousand miles away. Although it is not big, the villages and towns are dense, and it has reached the point where you cannot grazed. There are so many people and chariots and horses, day and night, like thousands of troops. I heard that the king has 200,000 warriors, 200,000 Cangtou army , 200,000 suicide squads, 100,000 servants, 600 chariots, and 5,000 war horses, but he intends to follow the opinions of the ministers and surrender to Qin. Now the King of Zhao sent me to suggest to you to make an alliance, and the six countries jointly resist Qin. I hope the king will make a clear decision." The King of Wei agreed with Su Qin's suggestion.